Browsing by Author "Benmenine, Djamel"

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    Experimental study of the effect of meteorological parameters on the performance of the solar chimney power plant
    (جامعة الوادي - university of el oued, 2021-06-16) Azizi, Abdelghani; Benmenine, Djamel; Nouar, Hadda; Kaddour, Abdelmadjid
    The solar chimney power plant (SCPP) is an economical technology for the production of solar electricity. The increase in the production efficiency of this type of installation is depended of the several theoretical and experimental studies. This paper studied the effect of some key parameters such as (ambient temperature, solar radiation), on the performance of the solar chimney power plant. Using the dimensions of our SCPP prototype and also compared by the Manzanares prototype with Ouargla weather conditions. Where the maximum solar radiation and ambient temperatures are 957 W/m2 and 30 ° C at 15h00. Respectively. The measured average air speed is 1.04 m/s, and the electric power value of the prototype is 2.04W. The results show that the solar radiation and the ambient temperature have a direct effect in the SCPP efficiency, and also confirm that the technology of solar chimneys is the best solution to install in the hot and arid areas like Ouargla city.
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    Study of a solar air conditioning system with ejector
    (جامعة الوادي - university of el oued, 2020-04-10) Ghodbane, ,MokhtarMokhtar; Boumeddane, Boussad; Khechekhouche, Abderrahmane; Benmenine, Djamel
    Air conditioning is one of the indispensable conditions of well-being in human life, so the face of this research to provide this basic necessity in remote areas and in desert places far from power grids. To achieve this goal, solar air conditioning has been adopted, where the compressor was replaced by an ejector, a parabolic trough solar collector coupled with a thermal generator and a small pump; this means that the solar air conditioner does not need a huge amount of electrical energy to operate. This paper is studding the optical and thermal efficiency of the solar collector used as a solar thermal generator, refrigeration subsystem performance (COPejc) and system thermal ratio of the studied air conditioner, where the cooling load is estimated at 18 kW. This work has allowed to acquire very important knowledge about R718 ejector solar air conditioners. Bouzaréah was chosen as the region to conduct this numerical study on June 11th, 2018. Regarding performance of the studied air conditioning subsystem (COPejc) is 0.6235. As for the PTC solar reflector subsystem, its mean optical performance is 75.74 % and its mean thermal performance is 65.01 %. Regarding the overall performance of the studied air conditioner, its mean value is 0.407